What database should I use for my app?

Should I use MySQL for my app?

For applications that require high availability, security and support complex queries to search for relational data whose structure will not change over time, MySQL is the obvious choice for any application that will benefit from its pre-defined structure and pre-set schemas for data integrity.

Do I need a database for my app?

You do not need a database for what you describe, although depending on how you plan on developing your app, it might make things easier for you to use a database.

What database should I use for my iOS app?

Some might say that Core Data's close relationship with Apple makes its the best iOS database for Apple-specific languages like Swift and Objective-C. But there are other features that truly give Core Data an edge for the best database for your iOS app. Core Data is, first of all, faster than SQLite at fetching data.